I have an Idea (don't know if its possible to implement):
It would be a charm, if there is a button "Save to Lua". This function saves the Data from the Database into a savable gatherer.lua (or cartographer_mining.lua, cartographer_herbalism.lua, ...) to use it ingame.

As long as you upload your gather.lua or cartxxxxx.lua first, then hit the lua download button, then just replace yours, you would be fine
The only hard part is matching the format of the specific lua file you are exporting